Last Updated: August 3, 2026

ORTHO-NOVUM 1/50 28 Drug Patent Profile


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When do Ortho-novum 1/50 28 patents expire, and what generic alternatives are available?

Ortho-novum 1/50 28 is a drug marketed by Ortho Mcneil Janssen and is included in one NDA.

The generic ingredient in ORTHO-NOVUM 1/50 28 is mestranol; norethindrone. There are eleven drug master file entries for this compound. Additional details are available on the mestranol; norethindrone profile page.

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Summary for ORTHO-NOVUM 1/50 28

US Patents and Regulatory Information for ORTHO-NOVUM 1/50 28

Applicant Tradename Generic Name Dosage NDA Approval Date TE Type RLD RS Patent No. Patent Expiration Product Substance Delist Req. Exclusivity Expiration
Ortho Mcneil Janssen ORTHO-NOVUM 1/50 28 mestranol; norethindrone TABLET;ORAL-28 016709-001 Approved Prior to Jan 1, 1982 DISCN No No ⤷  Start Trial ⤷  Start Trial ⤷  Start Trial
>Applicant >Tradename >Generic Name >Dosage >NDA >Approval Date >TE >Type >RLD >RS >Patent No. >Patent Expiration >Product >Substance >Delist Req. >Exclusivity Expiration
Last updated: July 8, 2026

ORTHO-NOVUM 1/50 28 Market Dynamics and Financial Trajectory (2018–2025)

ORTHO-NOVUM 1/50 28 is an oral combined hormonal contraceptive (COC) product (ethinyl estradiol + norethindrone acetate) marketed in a 28-day regimen. Its market dynamics are dominated by low-cost generic competition, payer and PBM preference for lowest net cost products, ongoing pharmacy substitution, and limited differentiation across lower-dose COC peers. Financial trajectory has been constrained by long-standing generic availability, with revenue driven primarily by brand persistence, channel inventory cycles, and periodic label or packaging updates rather than new clinical differentiation.

Because ORTHO-NOVUM 1/50 28 has long been outside protected exclusivity in the US, the relevant commercial story is not “growth from innovation” but retention of prescription share in a highly commoditized therapeutic category where pricing power is structurally weak and margins compress.


What is ORTHO-NOVUM 1/50 28 and how does it compete in the COC market?

Answer: ORTHO-NOVUM 1/50 28 is a 28-day combined oral contraceptive containing ethinyl estradiol (EE) and norethindrone acetate (NET-A). It competes in the mainstream COC segment that includes numerous AB-rated generics and brands, where differentiators are mostly logistics (NDC coverage, supply reliability), formulary position, and patient tolerability switching.

Market structure: COCs are a generic-first category

COCs are a classic chronic, high-volume class with:

  • High generic penetration across nearly all common EE and progestin combinations.
  • Pharmacy substitution and AB therapeutic interchange in many states and plans.
  • PBM formulary designs that steer toward preferred generics or multi-tier generics.

Where ORTHO-NOVUM 1/50 28 sits in payer logic

COC formulary placement typically follows net cost and PBM tier rules:

  • If a plan has preferred low-cost generics for “EE/NET-A 28-day,” the brand faces tiering and utilization friction.
  • Patients often remain on a product for adherence and side-effect history, but prescribers are pressured by formularies and switching prompts.

Competitive set (class adjacency)

ORTHO-NOVUM 1/50 28 is best viewed against:

  • Other 28-day EE + NET-A regimens (generic and any remaining branded versions).
  • Other 28-day COCs with different progestins at comparable EE doses (as therapeutic interchange options).
  • Lower EE cohorts (often positioned for tolerability) that can win share if plan preferences tilt lower.

How do pricing and volume mechanics drive ORTHO-NOVUM 1/50 28 revenue?

Answer: Revenue is mostly a function of (1) prescription share in a crowded generics-heavy segment and (2) the net price after rebates, chargebacks, and payer contracting. For legacy COC brands, volume is pressured while net price declines through competitive contracting.

Net price is the binding constraint

In mature COC segments:

  • PBMs can extract rebates through preferred placement.
  • Even “non-preferred” brands can lose repeat fills through step edits, prior authorization rules for specific products, or plan switches at renewal.

Volume is adherence-sensitive

COCs are refill-driven and adherence-linked:

  • If a product is out of stock or replaced, patients may switch.
  • But switching is limited by tolerance history and clinician decisions after breakthrough bleeding, headaches, or other tolerability issues.

Channel inventory cycles matter

At steady-state:

  • Brand manufacturers manage periodic supply and distribution runs that can create short-term shipment volatility.
  • Retail and mail channels optimize inventory against demand; substitution can accelerate or slow depending on contracting and availability.

When do ORTHO-NOVUM 1/50 28 lose exclusivity and how does that shape financial trajectory?

Answer: In the US, ORTHO-NOVUM 1/50 28 is effectively in a post-exclusivity posture: generic competition has existed for years for common EE + NET-A COC combinations. Financial trajectory is therefore characterized by market-share attrition and sustained revenue compression rather than an exclusivity ramp-down event that would create a single “cliff.”

What “loss of exclusivity” means commercially for COCs

Unlike oncology or specialty injectables, COCs typically show:

  • Ongoing incremental share loss as additional AB entrants appear.
  • Price normalization where brand net prices converge toward sustainable-but-lower levels.

Post-generic era outcomes

For brands like legacy COCs:

  • Reduced acquisition of new prescribers (forms and e-prescribing defaults steer to preferred generics).
  • Retention of existing patients becomes the principal revenue stabilizer.
  • Promotional lift has diminishing returns versus net-price and formulary placement.

What is the Orange Book status of ORTHO-NOVUM 1/50 28 and what does it imply for market competition?

Answer: ORTHO-NOVUM 1/50 28 is a product whose actives (ethinyl estradiol and norethindrone acetate) correspond to a mature generic landscape. That implies limited remaining regulatory barriers for competing applicants for AB-rated products, making the market primarily contestable on price and access rather than on regulatory exclusivity.

Orange Book implications for COC brands

In practice:

  • Once AB generics exist, the brand’s differentiation rarely hinges on patent-controlled unique mechanisms.
  • FDA regulatory status tends to support generic entry without requiring complex clinical labeling differences.

(Note: Specific Orange Book patent numbers, expiration dates, and listed dosage form codes cannot be provided here because the underlying Orange Book listing data for ORTHO-NOVUM 1/50 28 is not included in the provided prompt.)


How strong is the patent estate for ORTHO-NOVUM 1/50 28 versus generics?

Answer: The commercial strength of ORTHO-NOVUM 1/50 28’s IP estate is structurally limited by the category’s long-running generic availability. In a mature COC setting, even when patents exist, they typically do not block AB generic availability for the underlying active combination and dosage form.

What matters for litigation leverage

For legacy COCs, practical barriers to entry usually stem from:

  • Specific formulation or manufacturing patents
  • Nonstandard dosage form or unique regimen packaging claims
  • Method-of-use constraints for specific labeling claims

But generic substitution is typically feasible once the base combination is cleared.

(No patent numbers or litigation dockets are supplied in the prompt; no defensible case-specific dataset can be stated.)


What generic entry risks exist for ORTHO-NOVUM 1/50 28?

Answer: Generic entry risk is low in the sense that entry already occurred across common EE + NET-A COC combinations. The remaining risk is incremental share loss from:

  • Additional low-cost entrants,
  • Evolving PBM preferred lists,
  • Rebate-driven contracting changes,
  • Supply disruptions that trigger durable switching.

What triggers marginal share losses

  • PBM formulary redesigns after annual contract cycles.
  • Mail-order channel contracting that consolidates to one or two preferred NDCs.
  • Increased “therapeutic interchange” acceptance that pushes patients toward another EE/progestin pair at similar doses.

Which companies sell competing products to ORTHO-NOVUM 1/50 28 and how does that affect share?

Answer: The competitive set includes multiple AB generic manufacturers plus any remaining branded legacy COC suppliers. The share impact is driven more by PBM and channel economics than by clinical differentiation.

Competitive dynamics

  • Preferred generic winners often gain disproportionately because prescribers and pharmacies default to them.
  • Brand survival depends on being an acceptable non-preferred option with sufficient patient retention.

(Company names and NDC-level competitor lists cannot be enumerated without Orange Book and NDC reference data for ORTHO-NOVUM 1/50 28.)


How does ORTHO-NOVUM 1/50 28 financial performance typically track in a commoditized COC environment?

Answer: In a commoditized COC market, brand revenue typically shows:

  • Modest declines or flatlining after generic saturation,
  • Occasional step-downs aligned with formulary changes and intensified substitution,
  • Limited upside without label differentiation or preferential contracting.

Revenue drivers in practice

  • Prescription share retention: Patients continue if they tolerate the product and if switching friction is high.
  • Payer positioning: Net price and utilization depend on the contract year.
  • Channel mix: Retail vs mail-order share affects both pricing and demand stability.

Risk factors

  • Contracting pressure from PBMs.
  • Persistent price compression across equivalent AB products.
  • Competition from lower-dose or more preferred progestin regimens if formulary rules shift.

How do FDA pathway and labeling differences affect ORTHO-NOVUM 1/50 28 market access?

Answer: ORTHO-NOVUM 1/50 28 is accessed via standard COC labeling and AB generic pathways in most competitive contexts. Label differences are limited across equivalent regimens, which reduces regulatory differentiation as a lever for sustained brand advantage.

What can change access

Even without new clinical meaning, access can shift due to:

  • Package size and NDC coverage for plan formularies.
  • Updated Risk Evaluation and Mitigation Strategy (REMS) requirements if applicable to the class at any time.
  • Safety communication updates that can alter prescriber comfort and switching behavior.

(No specific FDA communications for ORTHO-NOVUM 1/50 28 are included in the prompt.)


What is the expected revenue sensitivity to formulary tiering for ORTHO-NOVUM 1/50 28?

Answer: The product is likely highly sensitive to tier moves because the COC category is price-elastic with many substitutes. A shift from preferred to non-preferred typically drives meaningful utilization changes over 1 to 3 contract cycles.

Tiering sensitivity mechanism

  • Higher copays lead to adherence disruption or switching.
  • Pharmacy benefit administrators may restrict dispensing to preferred products.
  • Prescribers may change due to “prescriber inertia” plus patient cost concerns.

How does ORTHO-NOVUM 1/50 28 compare with other COC formats and regimens on commercial defensibility?

Answer: Compared with longer-acting hormonal options or newer progestin strategies, legacy 28-day COCs have weaker defensibility because generics dominate and payers can readily substitute.

Format comparison

  • 28-day COCs: High generic availability, substitution-friendly.
  • Newer delivery systems (implants, injectables, rings): Higher barriers to entry and different patient segments.
  • Specialty-focused oral regimens: Some differentiation possible via dosing or tolerability profiles, but still often generic-competing.

What Key Takeaways drive ORTHO-NOVUM 1/50 28’s market and financial outlook?

  • ORTHO-NOVUM 1/50 28 operates in a mature, generics-dominated COC segment where net price and formulary placement matter more than clinical differentiation.
  • Financial trajectory is constrained by structural price compression and recurring share attrition as PBMs consolidate on preferred AB products.
  • Revenue retention is primarily adherence- and switching-friction driven, not innovation-driven growth.
  • Incremental upside would require improved payer contracting or differentiated access, not new exclusivity.

FAQs

1) What share does ORTHO-NOVUM 1/50 28 typically hold versus preferred EE/progestin generics?
Share depends on plan tiering and local substitution behavior; in mature COC markets, preferred generic consolidation usually caps legacy brand share.

2) How quickly do COCs lose prescriptions after a formulary tier downgrade?
Typically over one to three contract cycles as pharmacies and prescribers migrate toward preferred NDCs.

3) Do package size or NDC changes materially impact ORTHO-NOVUM 1/50 28 demand?
Yes. Coverage and PBM mapping to preferred NDCs can change utilization independent of clinical equivalence.

4) Are method-of-use or formulation patents a meaningful barrier for EE + NET-A COCs today?
Generally no at the class level once AB generics exist; barriers are usually limited to niche formulation/manufacturing details rather than blocking base-regimen substitution.

5) What mail-order vs retail mix shifts matter most for legacy COC brands?
Mail-order contracting often consolidates to preferred NDCs with stronger pricing and higher dispensing leverage, amplifying volume sensitivity.


References (APA)

  1. [No sources were provided in the prompt and no Orange Book, FDA label, or company financial filings for ORTHO-NOVUM 1/50 28 were included, so no citable documents can be listed.]

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